B.Sc. DEGREE EXAMINATION, APRIL 2018.
Second Semester
Optometry
PHYSICAL OPTICS
(2016 onwards)
Time 3 Hours Maximum 75 Marks
Part A (10 x 2 20)
Answer all questions.
1. What is the visible region?
2. State the first law of reflection.
3. What are the coherent sources?
4. State principle of superposition.
5. Define resolving power of microscope.
6. What is analyzer?
7. What are retarders?
8. What is uppolarized light?
9. What is population inversion?
10. Give the wavelength range of electromagnetic spectrum.
Sub. Code
24
CP-8571
2
sp4
Part B x 5 25)
Answer all questions.
11. Write the short notes on dual nature of light.
Or
What is a simple harmonic motion? Obtain the
mathematical representation of a simple harmonic
wave.
12. Differentiate between interference and diffraction of
light.
Or
Give a brief account of colours of thin film.
13. Write a short notes on Resolving power and
magnifying power of a microscope.
Or
State and explain Rayleigh's criterion for spectral
resolution.
14. What are polarizers and analysers?
Or
Compare a zone plate with a convex lens.
15. What is the role of He in He-Ne laser?
Or
Write a note on ultra violet spectrum.
CP-8571
3
sp4
Part C x 10 30)
Answer all questions.
16. Discuss the working principle of Michelson'smethod
to determine the velocity of light.
Or
Give the theory of diffraction due to single slit.
17. Discuss the superposition of two simple harmonic
waves at left angles to each other.
Or
Describe Lloyds mirror experiment to determine the
wavelength of light.
18. Discuss the working, construction and applications
of telescope.
Or
State the fundamental conditions for the product of
interference fringers.
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